a=abs(-6)
print a
b=bin(0)
print b

class Student():
    def __init__(self,id,name):
        self.id = id
        self.name = name
    def __repr__(self):
        return 'id = '+self.id +', name = '+self.name
xiaoming = Student(id='001',name='xiaoming')
#print(xiaoming)
ascii(xiaoming)